Definitive exponential of drab
On the north side of Scheurman Mountain is SR 89A. "Upper Red Rock Loop Road" loops around the east side. "Lower Red Rock Loop Road" continues up on the west side of Scheurman Mountain. Sedona High School sits on the northeast end.
Scheurman Mountain isn't a big Sedona attraction. It's relatively unexciting in itself, wide and flat. There's no exotic peak or red rock formations. The trail crosses from the southwest end to the northeast end right next to the high school. "Sedona Hikes" suggest the high school end to be more worthy of a visit than the southwest end. I'm just going to say it's all a little drab at best. Hiking the trail did give me a better understanding for the area. The trail is labeled as the "S" trail on forest service markers. It's apparently a horse trail used by the surrounding community. I can see this as a fair ride if you lived near by. However, I wouldn't recommend going out of your way to reach this trail. It's peaceful on top with long stretches that are relatively flat and barren. Views tend to be distant. A few spur trails take off along the way. None of which add much to the experience.
The trail can be accessed from either end. I choose the southwest end to hook up with the SRA Gooseneck Hike. It's unlikely you'll want to hike the whole mountain back and forth for 4.5 miles. You might want to pick up a quick view from either end and go right back down. The top might be nice with broken clouds and cool breeze.
Check out the Triplogs.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.