school-platform/app/views/courses/_form.html.erb

<%= bootstrap_form_for(@course) do |f| %>
  <%= render 'shared/error_messages', object: f.object %>

  <%= f.text_field :name %>

  <%= f.select :school_id, options_for_select(current_user.schools_administering.map{ |school| [school.name, school.id] }) %>

  <%= f.date_field :starts_on %>
  <%= f.date_field :ends_on %>

  <%= f.submit yield(:button_text), class: "btn btn-primary" %>
<% end %>