Before the Early College Option came about there were ways a student could get a fast start in college by skipping courses.
One method of skipping courses was through a placement exam, which is extensively used in mathematics and English. If a student is proficient in a subject, the student can simply start at the next level.
Similar to the placement exam was a proficiency exam. The student would request an exam which is equivalent to the final exam in a course, and if the exam is passed the student not only places past the course, but the student is given credit in the course. This is different from a placement exam, since the student is awarded college credit for the course. In the placement exam the student still must complete the same number of college hours, so effectively the student replaces a required course with an elective.
Advanced Placement (AP) courses are high school courses taught by a teacher who is also qualified to teach at the college level, and the course is at the rigor of a college course. This allows a student to get both high school and college credit for the course, subject to a college accepting the course.
Finally, some high school seniors, and a few juniors, have taken enough high school courses as to free up enough time to attend one or two college courses per semester.
All of these are generally reserved for the brightest students, and usually result is just a few, at most, college courses being skipped by any given student.
These are all viable options with positive results. There is no need to make changes.