Please choose the correct ending to complete the given sentence: Work World: [header] How to be a preschool teacher [title] Obtain a high school diploma. [step] The minimum requirements to be a preschool teacher are to have a high school diploma and a certificate in early childhood education. If you do not have a high school diploma, you can obtain a high school equivalency credential by taking the ged exam.

Ending1: [substeps] Teachers must have a high school diploma, preferably in the class of a subject such as mathematics or history. Schools must have over 15 students and must have at least a good semester's experience at math and science. Ending2: The ged credential classifies you as a certified preschool teacher. [substeps] As a preschool teacher, you are required to pass a final exam administered by the state. Ending3: [substeps] Make sure that you have studied english or any other music that you find helpful. The highest paying subjects are those related to education, such as kindergarten and math. Ending4: [substeps] Sign up for test-prep classes through your local community college or technical college to prepare you for the ged exam. The ged testing service also offers low-cost and free practice tests and tutorials online.

Answer format: ending1/ending2/ending3/ending4