Not later than July 1, 2016, each regional educational service center shall conduct a survey of English language learner services and bilingual education programs provided in the region serviced by the regional educational service center for the purpose of identifying the need for enhanced or new English language learner services and bilingual education programs provided by the regional educational service center. Such survey shall include, but need not be limited to, (1) an inventory of English language learner services and bilingual education programs provided by local and regional boards of education to public school students, (2) the number of students receiving English language learner services or enrolled in bilingual education programs provided by a local or regional board of education, and (3) the total cost incurred by each school district for all such English language learner services and bilingual education programs and the cost incurred by each school district for each such English language learner service and bilingual education program. Each regional educational service center shall develop and maintain its own survey procedure and may conduct subsequent surveys as necessary.