 
         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)

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


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

    var school: School? {
        didSet {
