Marquette Catholic High School Home

On Explorers!

Learn what being an Explorer is all about

Founded in 1927, Marquette Catholic High School is a college preparatory,

co-educational school where we do exactly that, prepare students for college.

It's a great time to be an Explorer!

The Marquette experience is unique, challenging and - a lot of fun. Every year, our students go on to attend some of the nation's finest universities. As a college prep school, we prepare our students to graduate from, not just get into, college. We know we have succeeded when our graduates tell us "Marquette was tougher than their first couple years of college."

Our graduates also become a part of the Marquette family for life. If you are a prospective student or the parent of a prospective student, we hope you will come to visit us and learn what being an Explorer is all about.

ON EXPLORERS!

Apply Today!

News & Announcements

Homecoming Court 2026

Marquette Catholic is proud to announce our 2026 Homecoming Court. The King and Queen will be crowned at the dance on September 26, at MCHS.

North County Information Night

We welcome the opportunity to meet those interested in becoming Explorers at our North County Information Night on Monday, September 28, at Cugino's!

Guests will be able to talk with our Admissions team, meet our Principal, Athletic Director, Deans, and more. Light appetizers will be served. The event is free.

Admissions Applications Open for 2027-2028

Admissions, Financial Aid, and Scholarship applications are open for the 2027-2028 school year for incoming freshmen and transfer students

Fall 2026 Shadow Days

Future Explorers, don't miss your chance to experience Marquette Catholic Shadow Days! Choose from four available dates and secure your spot today! Space is limited, so don’t wait to register.

We can't wait to welcome you! On Explorers!

It's Dance Clinic Time!

The MCHS Dance Team is excited to host a Dance Clinic for kids in K-8th grade! Participants will learn dance skills from members of the current MCHS dance team. Dance Clinic will be held on Oct 2nd with a halftime performance on Oct 3rd. Sign up today!

8th Grade Day at MCHS

Explore the possibilities! If your student is currently in 8th grade and interested in attending Marquette Catholic next year, our 8th Grade Day on September 25 is for them! Register TODAY!

Hall of Fame Concept - Marquette Catholic, Alton, Illinois

Marquette Catholic Launches Plans for Athletic Hall of Fame

In celebration of it's 100th school year, Marquette Catholic plans to launch an Athletic Hall of Fame to honor the many players, coaches, teams, and individuals deserving of the honor.

33rd Explorer Classic @ The Woodlands Golf Club

Back by popular demand, we offering morning and afternoon shotgun starts this year. Play, sponsor, or volunteer. All proceeds help support the Explorers Athletic Program. Click the blog below for more details.

Fall 2026 Sports Spirit Wear Store is OPEN!

Check out the Explorers fall sports online store TODAY! Apparel options for men, women, and youth. The DEADLINE to order is THURSDAY, SEPTEMBER 3 at 11:59 pm. marquettecatholic.org/fallsportsstore

2026 Homecoming Block Party

Alumni, Current & Past Parents, and Friends of Marquette, Join us Saturday, September 26 in front of the school as we celebrate Homecoming under the stars! Food & Drinks available, live music, and "The BIG Drawing"! Someone will win $50,000!

Rendering of Alton Marquette Catholic 1927 Building

Marquette Catholic Capital Campaign Feasibility Phase

Marquette Catholic exploring support for campaign that could modernize the campus, grow the school's endowment, improve athletic facilities, increase scholarships, financial aid, and more.

Spring 2026 | Honor Rolls Announced

Congratulations to our students named to the High Honor and Honor rolls for the Spring 2026 semester. On Explorers!

Explorers Take the Stage at the Ken Page Awards

Join us in congratulating Marquette Catholic’s Ella Walters and Heidi Kahl for performing at the Ken Page High School Music Awards at the Fox Theatre, representing MCHS among top talent in the St. Louis region.

Marquette Catholic 2026 Prom King and Queen Sam Rea and Addie Bryson

Prom King & Queen 2026

Marquette Catholic High School announces seniors Sam Rea and Addie Bryson as Prom King and Queen for 2026.

Athletic Awards Banquet

The Athletic Awards Dinner and Banquet will be May 17, 2026 at Bluff City Grill. Tickets must be purchased by May 1. Athlete tickets only $10! Parents invited and encouraged to attend. Come celebrate the athletic highlights of the season and award winners!

Summer Camps Registration Now Open!

Our camps are designed for 4th - 8th graders (as of fall of 2026) the chance to experience our athletic programs in a fun and supportive environment. Register by April 30 to receive the early registration discount - $10 off. Sibling discounts and team discounts available. Grad your friends, teammates, or whole team!

Click the blog for more details or to sign up today!

Placement Test Details

Incoming Students Placement Test Sign Up & Details. The Placement Test is February 28 and March 7, 2026! All students taking the test must register in advance. Check out the schedule, what you can bring, and more!

2026 Blue & White Gala

Please join us at this year's annual Blue & White Gala. Saturday March 21, 2026 at Lewis & Clark Community College in The Commons. Wear your best prom attire! This is the Explorer Club's largest fundraiser. Attend • Donate • Volunteer **** Buy your tickets today! ****

Oct 12