But the Stars struggled and were upset by Webster Groves, 71-62.
John finished with 15 points, four rebounds, three steals and two assists but made just seven of 21 shots from the field and only one of 10 from behind the 3-point arc.
"Going out, losing in the championship game was tough," John said. "Once it was over, you try to think of the good that came out of it. I feel like we could have done a lot better. You can't get it back, so you just work harder."
The 17-year-old Saint Louis University signee, who missed eight games with a broken left (non-shooting) wrist before returning to help McCluer North in its playoff run, is now looking ahead to the future.
"I took a week off," John said. "Then I'm going to get back in the gym, hit the weights hard and get ready for next year."
John visited the SLU campus on Friday to say hello to Gateway Basketball Club teammate Kyle Cassity, who was making an official visit, but he plans on being a fixture on campus soon when the current Billikens players start to play pick-up games on a regular basis.
"I'm going to try not to miss any," John said. "I'll be there whenever I can."
A 6-foot-4, 200-pound senior shooting guard, John is currently the only member of Saint Louis U's recruiting class to live in the St. Louis area, so he's going to visiting the campus every chance he can to improve his game and make progress toward earning playing time next year as a freshman.
For his senior season, John averaged a team-high 17.2 points per game while connecting on 32.5 percent of his 3-point attempts (25 of 77) as McCluer North went 25-5. John averaged 15.3 points per game and made 28.4 percent of his 3-point attempts as a junior.