I assume that must be your local school's cut-off - that sounds reasonable. Some of DS' practice scores were at that level although we won't get the 2013 AMC8 results for at least a couple of weeks. DS would have to take the AMC10 at one of the university sites as well since his elementary school doesn't offer AMC10 (or even AMC8). However, this means there is no minimum requirement to sign up for the test.