LifeTeen Sessions are the catechetical, issue and social components of St. Mark's High School Faith Formation and Youth Ministry program. These sessions beginning with the 10:30 AM Mass present tenets of the Catholic faith in a non-classroom format, making the faith relevant for teens in grades 9-12. This curriculum is based on the United States Catholic Conference of Bishop’s recommendations for high school faith formation and also the Eight Components of Youth Ministry as outlined in the Bishop's Document Renewing the Vision. 
All high school teens (grades 9-12) are welcome.
 
The program is made up of three components: LifeTeen Sessions referred to above three of which during the year are for all parents and teens together; a spiritual component that includes the expectation of weekly Mass attendance with active participation in the various liturgical ministries by the teens and families, full and active participation in an overnight retreat, attending the Diocesan Youth Rally at Assumption College  in the fall and the praise and worship program “Lift” during Advent ; and the service component which includes the parish-wide monthly food drive for the Sutton Food pantry, serving monthly meals at the Mustard Seed Catholic Worker House in Worcester ,working with the St. Mark’s Womens’ Auxiliary to provide meals at Rhodes to Recovery in Millbury and as a LifeTeen  community at other sites in Worcester,  volunteering with the parish chapter of St. Vincent de Paul Society in the local community as needed , volunteering with St. Mark's Haiti Ministry, participation in several Fundraising Events, peer ministry, mentoring in the Edge Program,  full participation in the Week of Service Program – “Taking it to the Streets”  June 25-29, 2018  .
 
Sessions are scheduled on Sundays beginning at 10:30 AM with the Mass until 1:00 PM. Times for other events will be noted on the schedule available at the session.

This year's themes are:  Heart of God :The Person of Christ, Sacraments, Social Justice,
Faithful Citizenship, Dealing with Addictions, Social Media and Bullying.