Michael Schoch, Noodle Intern
General enrollment information as well as a school locator are available on the school district's welcome page. I couldn't find a specific date, but generally students are enrolled in the spring.
Since it's a public school Park Place Middle School must enroll students throughout the year; however, if you wait until after classes have started, there is a chance your child may have to attend another school in the district. The best option is to call Park Place Middle School at (360) 804-4300 to get specific information and deadlines.
If you need to, you can use Noodle's search bar to find and contact other schools in your local area. Best of luck!