An (1) introduction, (2) a body and (3) a conclusion.

The introduction should have (1) a contention or thesis (2) a definition of terms (3) an indication of what is to come.

The body should have 3 paragraphs.

Each paragraph should have (1) a topic sentence outlining the point you will cover in that paragraph, (2) 3 points of fact, evidence or quotation to support and (3) a concluding sentence that relates your argument back to the topic, or links to the next paragraph, or both

The conclusion should (1) present your conclusion, (2) key words or phrases that summarise your main points, (3) a closing statement that resounds with your reader.

Hope it helps, all the best.

The thesis statement would include at least 3 reasons for example…

Kids shouldn’t have the right to wear whatever they want to school because (1) its distracting, (2) makes others feel left out, (3) is too expensive.

You would then write a paragraph about each of your subjects in your thesis statement.

The last paragraph should repeat your thesis and give a good conclusion… good luck.