As the school year kicks off this week for families in the Shoreline Unified School District, students will notice some changes to their schedules. The sprawling coastal school district is joining an increasing number nationwide that have adopted a Wednesday early dismissal model, allowing time for teachers to collaborate and students to receive extracurricular enrichment. This year, Shoreline students from transitional kindergarten through sixth grade will be dismissed between 1 and 1:30 p.m., rather than…