Online testing can now be accessed through the new US Lacrosse portal in Arbiter sports (http://uslacrosse.arbitersports.com)
It is important that you create your login in Arbiter using the same email address you have on file with US Lacrosse. Once that is correct, you can follow This Guide by US Lacrosse for accessing the tests. Youth Officials must only take the Youth Rules test, but High School Officials will need to take both the Youth and High School rules test.
The NFHS and NCAA tests are administered by US Lacrosse.
Officials can find more information at: Men's Officials Information