curative; providing a remedy / intended to remediate (i.e., correct or improve) deficient skills in some subject

(education) A pupil enrolled in special classes to improve deficient skills.

In a remedial manner.

plural of remedial

Something that corrects or counteracts. / (law) The legal means to recover a right or to prevent or obtain redress for a wrong. / A medicine, application, or treatment that relieves or cures a disease.

(transitive) To provide or serve as a remedy for.

The act or process of remedying a situation.

plural of remedy

Third-person singular simple present indicative form of remedy

(transitive) To correct or improve (a deficiency or problem).