Help! It looks like we may be forced in to a "modified" 4x4 schedule by 1999-2000. Please send me a message if you teach at a school where some classes are taught all year on a traditional schedule and others, many others, are taught on a semester block - 90 min. classes- schedule. I see no alternative for AP courses other than an all year approach if the curriculum is to be adequately addressed. Let me know how your school is handling this dilemma. An address to contact administration for a sample master schedule would also be helpful.