<ul>
      {{#students}}
         <li>{{id}} {{name}}</li>
      {{/students}}
   </ul>

{
        students:[
            {
                id:1,
                name:'qqq'
            },{
                id:2,
                name:'qq2'
            },{
                id:3,
                name:'qq3'
            }
        ]}

let students = {students:[]}
    $.ajax({
        type:"GET",
        url: "https://jsonplaceholder.typicode.com/posts/1/comments",
        success: function(data) {
            $.each(data,function(i,v){
                students.students.push({id:v.id,name:v.name});
            });
        },
        error: function(jqXHR) {
            alert(jqXHR.status);
        },
        dataType: "json"
    });

function getGroupStudents(groupId) {
    var template = `
                <div id="modal-groups-students-trigger" data-toggle="modal" data-target="#modal-groups-students"></div>
                <div class="modal fade" id="modal-groups-students" tabindex="-1">
                    <div class="modal-dialog">
                        <div class="modal-content">
                            <div class="modal-header">
                                <div class="pull-left">
                                    <h5 class="modal-title">
                                        <i onclick="displayGroupsModal()" data-dismiss="modal"  class="hand zmdi zmdi-arrow-left" />
                                        Группа 1/60
                                    </h5>
                                </div>
                            </div>
                            <div class="modal-body">
                                <ul>
                                    {{#students}}
                                    <li>{{id}} {{name}}</li>
                                    {{/students}}
                                </ul>
                            </div>
                         </div>
                    </div>
                </div>`;
    let compiledTemplate = Template7.compile(template);
    let students = {students:[]}
    $.ajax({
        type:"GET",
        url: "https://jsonplaceholder.typicode.com/posts/"+groupId+"/comments",
        success: function(data) {
            $.each(data,function(i,v){
                students.students.push({id:v.id,name:v.name});
            });
        },
        error: function(jqXHR) {
            alert(jqXHR.status);
        },
        dataType: "json"
    });
    console.log(students)
    let html = compiledTemplate(students);
    $('#groupStudents').html(html);
}