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 format geared toward 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, 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 opportunities both here at St. Mark’s and in the greater local community, including helping with the Sutton Food pantry, Urban Missionaries,
Rhodes to Recovery in Millbury and Youville House in Worcester, and participation in various other ministries here at St. Mark’s (Haiti, Life Teen Peer Ministry, Mentor/helper with Edge, Elementary or Children’s Liturgy programs, Eucharistic Minister or Lector –to name a few).
All are expected to participate in our service week – “Taking it to the Streets” – June 22-26, 2020.
 
Sessions are scheduled on Sundays beginning at 10:30 AM with the Mass, until 1:30 PM
This year's theme is Love Thy Neighbor and includes sessions covering: Racism/Intolerance, Social Justice, Activism, Discipleship and Scripture, and Prayer.