Initial investment. This includes equipment and rental costs, furniture purchases, and advertising.
Financing. How do you plan to invest in the business, whether it will be your own funds, loans or investments of investors.
Staff. How many people will teach in a private school and what salary they will be able to receive.
Taxation. The type of tax regime and the costs incurred by the company under this tax system.
Income. Preliminarily, you should calculate how many students the school is able to serve, what income will be received in the first and subsequent years.
Marketing strategy. What business promotion tools will be the most effective.
Competent answers to all these questions will give a concrete idea of your business idea.