app/views/schools/_schools.html.erb
<div id="accordion<%= label %>" class="accordion-block">
<div class="card">
<div class="card-header" id="heading<%= label %>">
<h5 class="mb-0">
<a class="nav-link collapsed" data-toggle="collapse" data-target="#collapse<%= label %>" href="#collapse<%= label %>" role="button" aria-expanded="false" aria-controls="multiCollapseExample1"><%= title %></a>
</h5>
</div>
<div id="collapse<%= label %>" class="collapse" aria-labelledby="heading<%= label %>" data-parent="#accordion<%= label %>">
<div class="card-body">
<div class='btn-group'>
<%= link_to t('schools.schools.compare_schools'), compare_index_path, class: 'btn nav-link' %>
</div>
<div class="padded-row">
<% schools.each_slice(3) do |threeschools| %>
<div class="row">
<% threeschools.each do |school| %>
<div class="col-lg-4">
<%= link_to "#{school.name}", school_path(school), class: 'nav-link' %>
</div>
<% end %>
</div>
<% end %>
</div>
</div>
</div>
</div>
</div>