The document is a letter from the Campaign to Retain Our School Services urging head teachers to support efforts to stop cuts to central education services in Birmingham. It lists over 20 services that will be affected by cuts, including music, SEN support, and outdoor learning. It asks head teachers to sign a petition, write letters, and attend a public meeting to pressure the council to retain and improve these services rather than cut or privatize them. The letter is signed by representatives of teachers unions in Birmingham.