Applying to law schools is a long, complex process that you shouldn't put off until your senior year. You should work with a Pre-Law Advisor to put together a plan to organize your efforts. And you should get informed about law schools and legal careers before making a decision. If you are planning on starting law school as soon as you graduate from Valpo, your general time-line should look something like this:
Freshman and Sophomore years - Concentrate on doing well in your classes, so that you will be a strong candidate when you apply for law school. Also, spend some time learning about careers in law and the legal profession so that you are sure this is the right path for you.
Junior year - Start preparing for the Law School Admissions test. Study on your own or take a course taught by professionals. Also start familiarizing yourself with law school so that you know where you want to apply.
Summer after your Junior year - Take the LSAT in June of this summer or at the very beginning of your senior year.
Fall Semester, Senior Year - Register for the Law School Data Assembly Service (LSDAS) at the beginning of the year. You will need to use this system to apply to law school. Plan to have your applications turned in to your law schools by the end October.
Spring Semester, Senior Year - In some cases, you may have an application decision from a law school before Christmas. Other decisions won't come until March or even April.