         self.toolbar.snp_makeConstraints { make in
             make.left.right.bottom.equalTo(0)
             make.height.equalTo(44)
+        }
+
+        self.activityIndicatorView.snp_makeConstraints { make in
+            make.center.equalTo(self.tableView)
         }
     }
 

    let tableView = UITableView()
    let toolbar = UIToolbar()
    let todayButton = UIBarButtonItem(title: "", style: .Plain, target: nil, action: "")

    var school: School? {
        didSet {


        self.view.addSubview(self.tableView)
        self.view.addSubview(self.toolbar)
        self.view.addSubview(self.activityIndicatorView)

        self.tableView.snp_makeConstraints { make in
            make.edges.equalTo(0)
