Those who work in educaion are notorious offenders. More educated people will have a greater tolerance and the odd longer sentence is acceptable. Remember, though, that short sentences can be punchy. They convey ideas quickly. Use of active verbs Passive verbs tend to make longer sentences and the meaning is not as direct.
Active verbs create a crisper, more direct style.
The student was enrolled by the university. The university enrolled the student. The course was offered by the department. The department offered the course.