Photo rejected

There has been aggressive in-camera processing due to the small sensor. You see that in the background with those washed out colours instead of the nice bokeh and depth of field one would expect.

Technical issues are anything that is not correct from a technical point of view: noise, chromatic aberration, sensor dust, out of focus, saturation, white balance, framing etc.

If that all would be correct, you would have got an IP violation because of identifiable parts in the picture (including the logo and possibly also the school name).

If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html

The school name is a good point. Although this is NOT the rejection reason, they stop on the first one.

The school name is not something accidentally in the shot. You want to make money by selling pictures based on the school's name. You need permission from the school to use the picture of their building unless it is over 100 years old. You need permission from the school to use their NAME in the picture OR the keywords in all cases (no time limit). They have the right to decide their good name cannot be used to advertise any product.

You may need to remove the school name on the building.

The focus point is not good. The boats light tower is not focused.

There is a white halo on parts to be seen. See photo below.

Adobe gave you a reason why it was rejected. Please tell us Adobe's reason (for example, IP violation, technical problems - it has both of these for sure), so we do not waste your time with guesses.