If you plan to take the April 15 ACT, the late registration deadline is March 23.
You can sign up at www.actstudent.org. There will be an additional $29.50 late fee.
If you plan to take the May 6 SAT, you must register before Pesach break.
First time SAT test takers: register via paper application, which can be picked up in the college office
If you have already signed up for a previous SAT, you can sign up at www.collegeboard.org