For the purpose of receiving the automatic bid to the playoffs, University High would be designated the conference champion by the IHSA. The IHSA has very specific rules for designating the conference champion for the purpose of receiving the automatic bid. In this case it would be a two-step process.
1) Remove Rochester from consideration because the Rockets gave up the most points in the head-to-head games they played against the two other teams they tied with. Rochester gave up a total of 75 points in the two games they played against Glenwood and University High. University High gave up a total of 51 points and Glenwood gave up a total of 50 points.
2) Once Rochester is removed from consideration, the IHSA will use the head-to-head result between University High and Glenwood for determining the conference champion. Since University High won that game, they will be designated the conference champion and will receive the automatic bid to the playoffs.
In reality, it should make little difference to the three teams. All three are likely to qualify for the playoffs and different criteria, than those described above, are used for seeding teams in the playoffs.