Free stuff for teachers
Varsity Learning Tools is a great resource for students and educators, and it's absolutely free to use!
Currently, we have over 60,000 professionally written problems and thousands of distinct practice tests across 150 subjects. This includes subjects like foreign languages, history, math, and science at all levels of sophistication. We also have practice tests and problems for common standardized tests like the ACT, SAT, GRE, GMAT, LSAT, MCAT, ISEE, and SSAT. Here is our link: http://www.varsitytutors.com/practice-tests.
To date, students have completed more than 30 million problems on the Varsity Learning Tools platform. Each question is tied to a specific academic concept, which means that students can pinpoint their particular strengths and weaknesses in almost any area.
The platform also includes free web-based classroom assessment software that is useful for educators: http://www.varsitytutors.com/classroom-assessment. Thousands of students and educators all across the country are using Varsity Learning Tools every day!