old_contents: from django.db import models
  
  
  class PromptSchool(models.Model):
      """The model tracks the integration with Prompts essay listing page."""
  
      name = models.TextField()
      slug = models.SlugField(max_length=512, unique=True)
      school = models.ForeignKey(
          "planner.School", null=True, blank=True, on_delete=models.SET_NULL
      )
  
new_contents: from django.db import models
  
  
  class PromptSchool(models.Model):
      """This model tracks the integration with Prompt's essay listing page."""
  
      name = models.TextField()
      slug = models.SlugField(max_length=512, unique=True)
      school = models.ForeignKey(
          "planner.School", null=True, blank=True, on_delete=models.SET_NULL
      )
  
subject: Fix docstring.