Sylvan Learning Systems Inc. has agreed to buy a 19 percent stake in Jostens Learning Corp., a San Diego-based company that develops educational software and sells it to about 13,000 U.S. schools ...

The company agreed to pay about $1.5 billion for Visant Holding Corp., which owns the school-memorabilia maker Jostens, from private-equity firms KKR & Co. and APriori Capital Partners.