Edit in JSFiddle

<div ng-app="myapp" ng-controller="mycontroller as ctrl">  
    <div ng-repeat="(key,value) in ctrl.school">
        {{ $index + 1 }}. <br />
        姓名：{{ key }} <br />
        年齡：{{ value.age }} 歲<br />
        體重：{{ value.weight }} cm <br /><br />        
    </div>     
</div>    

angular.module("myapp",[]).
controller("mycontroller",[function() {
    var self = this;
    self.school = {
        "john": {
            "age": 18,
            "weight": 50
        },
        "jack": {
            "age": 19,
            "weight": 53
        },
        "mary": {
            "age": 20,
            "weight": 43
        }
    }
}]);