Testmoz.com

One of my favorite resources is testmoz.  Teachers can create assessments on testmoz.com and the students can sign in to take them.  The tests can be multiple choice, true false, or fill in the blank.  The fill in the blanks must match exactly for grading purposes.  This resource saves time with grading and grouping.  The teacher can sign in as the administrator and the reports page will show exactly who missed what so that you can reteach to just a small group or one-on-one if needed.  Best of all it's FREE! :)