School Options in the States

‏السلام عليكم ورحمة الله وبركاته I live in the states and I am looking for high school options as going to free mixing schools are haram and there is so much more haram other than that too. Does anyone know options that are free from the fitna and still have good education or gives a high school diploma. May Allah bless you all and keep us all firm and have mercy on us .