diff --git a/src/web/module/maestro_extension.html b/src/web/module/maestro_extension.html
index 63711e5..05d5b4d 100644
--- a/src/web/module/maestro_extension.html
+++ b/src/web/module/maestro_extension.html
@@ -1,5 +1,6 @@
 <script>
 
+var maestroInfo = new MaestroInfo();
 var maestroAvailableDate = new MaestroAvailableDate();
 
 var registeredAccountType = -1;
@@ -7,32 +8,28 @@ var availableDate = "";
 var newAvailableDate = "";
 
 $(document).ready(function() {
-	loadMaestroInfo(maestroID);
+	maestroInfo.loadMaestroInfo(onLoadSuccessMaestroInfo, onLoadFailMaestroInfo);
 });
 
-function loadMaestroInfo(maestroID) {
-	sendRequestServer(	//url, sendParams, onSuccess, onFail, isDebugMode);
-		"./../server/maestro/maestro_info.php",
-		"maestro_id=" + maestroID,
+function onLoadSuccessMaestroInfo() {
+	registeredAccountType = maestroInfo.accountType;
 
-		(function(jsonData) {
-			registeredAccountType = jsonData.accountType;
+	maestroAvailableDate.setEndDateTime(maestroInfo.availableActivateDateTime);
+	maestroAvailableDate.showEndDate();
+	maestroAvailableDate.showMaestroExtensionMessage(maestroInfo.maestroName);
 
-			maestroAvailableDate.setEndDateTime(jsonData.availableActivateDateTime);
-			maestroAvailableDate.showEndDate();
-			maestroAvailableDate.showMaestroExtensionMessage(jsonData.name);
+	$("#maestro_info_player_count").val("학생수 : " + maestroInfo.getRegisteredPlayerCount() + " / " + maestroInfo.getMaxPlayerCount());
 
-			showPrice();
-			showMaestroName(jsonData.name);
-		}),
-
-		(function(errorMessage, errorCode) {
-			showErrorMessage(errorMessage, "error");
-		})
-
-	);
+	showPrice();
+	showMaestroName(maestroInfo.maestroName);
 }
 
+function onLoadFailMaestroInfo(errorMessage, errorCode) {
+	console.log("errorMessage : " + errorMessage);
+	console.log("errorCode : " + errorCode);
+}
+
+
 
 function showPrice() {
 	$("#price_account").html(