I am going to school.
Meaning: This means that the person is moving from one place to a place where children and young people go to learn. It's like saying, I am leaving home and moving to a place where I will learn new things.
Choice of Words: I is the subject of the sentence and refers to the person who is going to school. Am is a verb that indicates the present tense. Going is a verb that means to move from one place to another. To is a preposition that is used before a place to indicate direction or destination. School is a place where children and young people go to learn.
Alternative Expressions
Related Expressions