Leaderboard
                Description
                Return students record in descending order base on student points
                Method
            
                
                
               Endpoint
            
               
                /admin/api.php?f=leaderboard
                     
                
               Header
               
                Content-Type: application/x-www-form-urlencoded
                     
               Body (OPTIONAL)
               Filter by school name
               
                    Filter by grade
                    
                         Filter by school name and grade level
                         
                          school_name={schoolname}&grade_level={gradelevel}
                               
                Response
                Success
               
                
                    {
                        result: "success",         //string
                        content: [                   //Array of Objects
                        id: int,
                        user_id: int,
                        firstname: string,
                        lastname: string,
                        gradelevel: int,
                        schoolname: string,
                        preferences: string,
                        points: int
                        }
                        ]
                        }
                        
                 Fail
                
                    {
                    result: "fail"              //String
                    {
                         
                    Example
                    Javascript
                    GET Request
                    
                        
const student = async () => {
                            const response = await fetch('http://stockknowledge.org/admin/api.php?f=leaderboard');
                            return await response.json();
                            }
                           
                    POST Request
                    
                        const leaderboard = async () => {
                            const response = await fetch('http://stockknowledge.org/admin/api.php?f=leaderboard',{
                            method: 'POST',
                            body: 'grade_level=1',
                             headers: {
                             'Content-Type': 'application/x-www-form-urlencoded'
                            }
                            });
                             return await response.json();
                            }
                            });
                            return await response.json();
                        }