 All you need to know about what's going on at Marquette Catholic High School in Alton can be found at your fingertips. MarquetteCatholic.org is up to date with recent and future events, student and teacher features, registration information and reunion news. MarquetteCatholic.org is easy to navigate so you can find the latest school and alumni news, even a tab on how you can donate online. Go to MarquetteCatholic.org right now and find out why it's a great time to be an explorer.