As your class leader, it is your mission to lead the people in your group to spend time with Jesus (vs. 13). To accomplish this mission, two things must happen. First, you must spend time with Jesus yourself. Second, when you are leading your group, your group must spend time with Jesus too.
It is the start of a new year. Now is a great time to make some resolutions, no - make that commitments. One of those commitments should be to spend time with Jesus daily. I want to encourage you to make a commitment to read the Bible through this year, entirely through. There is some stunning research that indicates that American Christians own several Bibles, but they rarely read God's Word. Many followers of Christ have not read His Word from Genesis-Revelation. You can not be a transformative follower of Christ if you are not reading, studying and applying God's revelation of Himself in His word to your life.
But notice one other important point in today's passage. Verse 13 also says that Peter and John were "uneducated and common men". These two pillars of the early church did not have seminary degrees! I doubt that they had even graduated from Galilee High School! This is encouraging news! You do not need a framed degree on your wall from a seminary or Bible college to be an effective follower of Christ and a leader in His work. In fact, the Sunday School movement you are part of was founded by lay people, not the clergy. The most profound part of Sunday School or small group ministry is that it rests heavily upon the ministry of common men and women who walk with Jesus and are leading others to do the same.