Most Oklahoma high school football teams began spring practice last week.

Teams have a 21-day window to hold 10 practices, for a maximum of two hours, during the spring. The number of those that are full contact is limited to six — and they can’t be held on consecutive days.

Some teams will wrap up practice this week and others will continue into next week. This kicks off the Tulsa World’s 2019 high school football coverage that will include the All-World preseason position rankings series that starts with the announcement of the finalists on June 2. - Barry Lewis, Tulsa World high school sports writer