Originally, remedial classes were classes that tried to re-teach material that the student failed to learn during a previous exposure. Developmental classes were intended to teach material to which the student had never been exposed. These terms have changed, and remedial classes teach material that is considered at or below ninth grade level. Developmental classes teach material from grades ten through twelve. He gave examples of both remedial and developmental subjects.
Remedial writing covers sentence and paragraph structure.
Developmental writing covers writing themes. Remedial math originally covered basic computation when introduced eleven or twelve years ago but has changed to resemble pre-algebra. Developmental Math 1 is high school Algebra 1 compressed into a semester. Developmental Math 2 is high school Algebra 2 compressed into a semester. He gave me the impression that they do not teach reading.