Exhibit 99.1

Cambium Learning Group, Inc. Announces 2010 Q1 Earnings

Dallas, May 11, 2010-Cambium Learning Group, Inc. [NASDAQ: ABCD, “the Company”], a leading provider of research-based education solutions for students in Pre-K through 12th grade, including intervention curricula, educational technologies and services, will hold a conference call today at 4:00 p.m. Eastern Time to discuss 2010 first quarter financial results. The call will be based on unaudited results through March 31, 2010.

View 2010 First Quarter Earnings Release Schedules
http://phx.corporate-
ir.net/External.File?item=UGFyZW50SUQ9NDU0NTB8Q2hpbGRJRD0tMXxUeXBlPTM=&t=
1

Non-GAAP Financial Measures

EBITDA, Adjusted EBITDA and Adjusted Sales are not prepared in accordance with GAAP and may be different from non-GAAP financial measures used by other companies. Non-GAAP financial measures should not be considered a substitute for, or superior to, measures of financial performance prepared in accordance with GAAP. The Company believes that Adjusted EBITDA and Adjusted Sales provide useful information to investors because they reflect the underlying performance of the ongoing operations of the company, including the recent acquisition of Voyager Learning Company, and provide investors with a view of the combined Company’s operations from management’s perspective. Adjusted EBITDA and Adjusted Sales exclude items that do not reflect the underlying performance of the combined Company by removing significant one-time or certain non-cash items. The Company uses these measures to monitor and evaluate the operating performance of the Company and as the basis to set and measure progress towards performance targets, which directly affect compensation for employees and executives. The Company generally uses these non-GAAP measures as measures of operating performance and not as measures of the Company’s liquidity.

Investor Conference Call

The Company will hold a conference call today at 4:00 p.m. Eastern Time. The call will address unaudited financial results through March 31, 2010.

To listen to the Company’s upcoming conference call, please dial (877) 270-2148 and reference “Cambium” at 4:00 p.m. Eastern Time on Tuesday, May 11, 2010. The call will be recorded and archived until Wednesday, June 2, 2010, and can be replayed by calling (877) 344-7529 and entering ID# 439705. The conference call will also be Webcast and available on the Company’s website at www.cambiumlearning.com.

About Cambium Learning Group, Inc.

Cambium Learning Group, Inc. (NASDAQ:ABCD) is based in Dallas, Texas, and operates three business units: Voyager, a comprehensive intervention business; Sopris, a supplemental solutions business; and Cambium Learning Technologies, which includes ExploreLearning, IntelliTools, Kurzweil and Learning A-Z. Through its core divisions, Cambium Learning Group, Inc. provides research-based education solutions for students in Pre-K through 12th grade, including intervention curricula, educational technologies and services primarily focused on serving the needs of the nation’s most challenged learners and those realizing their full potential. The company’s website is www.cambiumlearning.com.

Media and Investor Contact:
Shannan Overbeck
Cambium Learning Group, Inc.
214.932.9476
shannan.overbeck@cambiumlearning.com

Forward Looking Statements

Some of the statements contained herein constitute forward-looking statements. These statements relate to future events, including the future financial performance of Cambium Learning Group, Inc., and involve known and unknown risks, uncertainties and other factors that may cause the markets, actual results, levels of activity, performance or achievements of Cambium Learning Group, Inc. to be materially different from any actual future results, levels of activity, performance or achievements. These risks and other factors you should consider include, but are not limited to, the ability to successfully attract and retain a broad customer base for current and future products, changes in customer demands or industry standards, success of ongoing product development, maintaining acceptable margins, the ability to control costs, K-12 enrollment and demographic trends, the level of educational and education technology funding, the impact of federal, state and local regulatory requirements on the business of the company, the loss of key personnel, the impact of competition and the risk that competitors will seek to capitalize on the risks and uncertainties confronting the new combined company, the uncertainty of general economic

conditions and financial market performance, and those other risks and uncertainties listed under the heading “RISK FACTORS” in Cambium Learning Group, Inc.’s Form 10-K. In some cases, you can identify forward-looking statements by terminology such as “may,” “should,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” “continue,” “projects,” “intends,” “prospects,” or “priorities,” or the negative of such terms, or other comparable terminology. These statements are only predictions. Actual events or results may differ materially. Cambium Learning Group, Inc. does not assume or undertake any obligation to update the information contained in this press release, and expressly disclaims any obligation to do so, whether as a result of new information, future events or otherwise.

###

Cambium Learning Group, Inc. and Subsidiaries
Condensed Consolidated Statements of Operations
(In thousands, except per share data)
(Unaudited)

		Three Months Ended
		March 31,				March 31,
		2010				2009
Net sales		$	28,222			$	15,794
Cost of sales:
Cost of sales			11,312				4,705
Amortization expense			6,742				4,156
Total cost of sales			18,054				8,861
Research and development expense			3,010				1,398
Sales and marketing expense			11,057				5,461
General and administrative expense			7,938				4,284
Shipping costs			544				267
Depreciation and amortization expense			2,577				2,380
Embezzlement and related expense (recoveries)			19				(383	)
Total costs and expenses			43,199				22,268
Loss before interest, other income (expense) and income taxes			(14,977	)			(6,474	)
Net interest income (expense)			(4,368	)			(4,677	)
Other income (expense), net			(10	)			(63	)
Loss before income taxes			(19,355	)			(11,214	)
Income tax (expense) benefit			(85	)			4,317
Net loss		$	(19,440	)		$	(6,897	)
Net loss per common share:
Basic net loss per common share		$	(0.44	)		$	(0.34	)
Diluted net loss per common share		$	(0.44	)		$	(0.34	)
Average number of common shares and equivalents outstanding:
Basic			44,318				20,493
Diluted			44,318				20,493

Cambium Learning Group, Inc. and Subsidiaries
Condensed Consolidated Balance Sheets
(In thousands, except per share data)

		March 31,				December 31,
		2010				2009
		(unaudited)
ASSETS
Current assets:
Cash and cash equivalents		$	8,797			$	13,345
Accounts receivable, net			12,854				19,127
Inventory			21,195				19,812
Deferred tax assets			6,267				6,267
Restricted assets, current			8,271				9,755
Other current assets			4,041				6,010
Total current assets			61,425				74,316
Property, equipment and software at cost			26,017				24,951
Accumulated depreciation and amortization			(5,202	)			(4,294	)
Net property, equipment and software			20,815				20,657
Goodwill			151,915				151,915
Acquired curriculum and technology intangibles, net			41,751				44,695
Acquired publishing rights, net			48,911				52,312
Other intangible assets, net			26,475				28,133
Pre-publication costs, net			6,053				5,464
Restricted assets, less current portion			17,331				14,930
Other assets			1,677				1,419
Total assets		$	376,353			$	393,841
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Notes payable — line of credit		$	10,000			$	5,000
Current portion of long-term debt			1,280				1,280
Current portion of capital lease obligations			418				443
Accounts payable			4,808				2,308
Contingent value rights, current			3,950				3,950
Accrued expenses			20,974				23,920
Deferred revenue, current			19,169				21,465
Total current liabilities			60,599				58,366
Long-term liabilities:
Long-term debt, less current portion			150,697				150,487
Capital lease obligations, less current portion			12,605				12,695
Deferred revenue, less current portion			2,673				2,716
Contingent value rights, less current portion			5,649				5,649
Other liabilities			23,597				24,156
Total long-term liabilities			195,221				195,703
Commitments and contingencies (See Note 14)
Stockholders’ equity:
Preferred stock ($.001 par value, 15,000 shares authorized, zero shares issued and outstanding at March 31, 2010 and December 31, 2009)			—				—
Common stock ($.001 par value, 150,000 shares authorized, 43,865 and 43,859 shares issued and outstanding at March 31, 2010 and December 31, 2009, respectively)			44				44
Capital surplus			258,990				258,789
Accumulated deficit			(138,708	)			(119,268	)
Other comprehensive income (loss):
Pension and postretirement plans			206				206
Net unrealized gain on securities			1				1
Accumulated other comprehensive income			207				207
Total stockholders’ equity			120,533				139,772
Total liabilities and stockholders’ equity		$	376,353			$	393,841

Cambium Learning Group, Inc.
Reconciliation of Adjusted Sales and Adjusted EBITDA
Three Months Ended March 31, 2010
(In thousands)
Unaudited

						Non-Recurring or Non-Operating Costs Excluded from Adjusted EBITDA:
										Legacy				Stock-based				Embezzlement				Adj Related
		Total				Integration				VLCY				Compensation				and				to Purchase				Adjusted
		GAAP				Costs				Corporate				Expense				Related				Accounting				EBITDA
Voyager		$	15,872			$	—			$	—			$	—			$	—			$	2,078			$	17,950
Sopris			3,903				—				—				—				—				—				3,903
Cambium Learning Technologies			8,447				—				—				—				—				3,074				11,521
Total net sales			28,222				—				—				—				—				5,152				33,374
Cost of sales			11,312				(1,019	)			—				(9	)			—				408				10,692
Cost of sales — amortization			6,742				—				—				—				—				—				6,742
Total cost of sales			18,054				(1,019	)			—				(9	)			—				408				17,434
Research and development expense			3,010				(240	)			—				(19	)			—				—				2,751
Sales and marketing expenses			11,057				(244	)			—				(20	)			—				385				11,178
General and administrative expense			7,938				(1,940	)			(300	)			(186	)			—				—				5,512
Shipping costs			544				—				—				—				—				—				544
Depreciation and amortization			2,577				—				—				—				—				—				2,577
Embezzlement and related			19				—				—				—				(19	)			—				—
Income (loss) from operations			(14,977	)			3,443				300				234				19				4,359				(6,622	)
Net interest income (expense)			(4,368	)			—				—				—				—				—				(4,368	)
Other income (expense)			(10	)			—				—				—				—				—				(10	)
Income tax expense			(85	)			—				—				—				—				—				(85	)
Net income (loss)			(19,440	)			3,443				300				234				19				4,359				(11,085	)
Normal non-GAAP EBITDA Adjustments:
Depreciation and amortization			9,319				—				—				—				—				—				9,319
Net interest income (expense)			4,368				—				—				—				—				—				4,368
Other income (expense)			10				—				—				—				—				—				10
Income tax			85				—				—				—				—				—				85
EBITDA		$	(5,658	)		$	3,443			$	300			$	234			$	19			$	4,359			$	2,697

Cambium Learning Group, Inc.
Reconciliation of Adjusted Sales and Adjusted EBITDA
Three Months Ended March 31, 2009
(In thousands)
Unaudited

														Non-Recurring or Non-Operating Costs Excluded from Adjusted EBITDA:
																						Legacy				Stock-based				Embezzlement
		Total								Total				Transaction				Integration				VLCY				Compensation				and				Adjusted
		GAAP				Voyager				Results				Costs				Costs				Corporate				Expense				Related				EBITDA
Voyager		$	5,940			$	13,566			$	19,506			$	—			$	—			$	—			$	—			$	—			$	19,506
Sopris			5,374				—				5,374				—				—				—				—				—				5,374
Cambium Learning Technologies			4,480				5,150				9,630				—				—				—				—				—				9,630
Total net sales			15,794				18,716				34,510				—				—				—				—				—				34,510
Cost of sales			4,705				5,854				10,559				—				—				—				—				—				10,559
Cost of sales — amortization			4,156				4,380				8,536				—				—				—				—				—				8,536
Total cost of sales			8,861				10,234				19,095				—				—				—				—				—				19,095
Research and development expense			1,398				1,127				2,525				—				—				—				—				—				2,525
Sales and marketing expenses			5,461				6,750				12,211				—				—				—				—				—				12,211
General and administrative expense			4,284				6,465				10,749				(2,600	)			(162	)			(586	)			(79	)			—				7,322
Shipping costs			267				237				504				—				—				—				—				—				504
Depreciation and amortization			2,380				546				2,926				—				—				—				—				—				2,926
Embezzlement and related			(383	)			—				(383	)			—				—				—				—				383				—
Income (loss) from operations			(6,474	)			(6,643	)			(13,117	)			2,600				162				586				79				(383	)			(10,073	)
Net interest income (expense)			(4,677	)			(365	)			(5,042	)			—				—				—				—				—				(5,042	)
Other income (expense)			(63	)			1,268				1,205				—				—				—				—				—				1,205
Income tax benefit			4,317				321				4,638				—				—				—				—				—				4,638
Net income (loss)			(6,897	)			(5,419	)			(12,316	)			2,600				162				586				79				(383	)			(9,272	)
Normal non-GAAP EBITDA Adjustments:
Depreciation and amortization			6,536				4,926				11,462				—				—				—				—				—				11,462
Net interest income (expense)			4,677				365				5,042				—				—				—				—				—				5,042
Other income (expense)			63				(1,268	)			(1,205	)			—				—				—				—				—				(1,205	)
Income tax			(4,317	)			(321	)			(4,638	)			—				—				—				—				—				(4,638	)
EBITDA		$	62			$	(1,717	)		$	(1,655	)		$	2,600			$	162			$	586			$	79			$	(383	)		$	1,389