Learn how to access the many helpful resources that are available right in our community that can benefit children and families as well as how to be an advocate for parents and children with ongoing needs related to health, education, and referral services. This course is designed to help you get your program aligned with Maryland EXCELS as well as help you reach higher Maryland Child Care Credential levels. Credential Boosters are classes that are identified by the Maryland State Department of Education in the Staff Credential modifications for levels 2, 3 and 4. Maryland State Education Core of Knowledge: 3 hours Community.