Escola Catolica Estrela do Mar (Chinese: 澳門海星中學) or E.M is a Catholic preschool through secondary school in São Lourenço (Saint Lawrence Parish), Macau, China. The school has an annual event held on 8 December each year which commemorates the construction of the school.The registration school serial number at the Education and Youth Affairs Bureau (Macau) ("Direcção dos Serviços de Educação e Juventude" or DSEJ; 教育暨青年局) is 004 and 005 for the branch. It is a member of the Macau Catholic Schools Association.