Kathryn, I checked on your application record and saw that you were able to answer some information about high school on Step 4 of the application. I take it you were able to get a little bit further in the app?
We have occasionally noted the slow response of the form and have found that closing/restarting your browser usually fixes the problem. Minimizing the amount of open tabs/windows usually helps as well. Let me know if you have any luck with this.