The success of such a model would require that the aid be professionally trained. Further, money must be made available to afford these services. If funding is not available, approach your local university for help in providing services by trained students in need of credit and experience. If the student's individual plan requires instruction that is out of context of the regular classroom, this model may work for you. It is important to keep track of the time the student spends out of the class.
Much time is wasted going to and from the resource room.
Further, it isolates the child and may even be confusing for the child to pick up where they left off before leaving the class. It is important to keep track of what the child is learning outside of the class so that learning is transferable. Therefore this type of program should be limited in its use. Only you and your team can decide which model is best for your students and your classroom. All students should feel they are important members of the classroom.