diff --git a/src/data/layers/management.tsx b/src/data/layers/management.tsx
index aeb8b1c..fa4b107 100644
--- a/src/data/layers/management.tsx
+++ b/src/data/layers/management.tsx
@@ -1453,9 +1453,9 @@ const layer = createLayer(id, () => {
     })) as GenericBuyable;
 
     const classroomCost = computed(() => {
-        var v = classrooms.amount.value;
-        if(Decimal.gte(v,100)) v=Decimal.pow(v,2).div(100)
-        if(Decimal.gte(v,1e4)) v=Decimal.pow(v,8).div(1e28)
+        let v = classrooms.amount.value;
+        if (Decimal.gte(v, 50)) v = Decimal.pow(v, 2).div(50);
+        if (Decimal.gte(v, 200)) v = Decimal.pow(v, 2).div(200);
         const classroomFactor = Decimal.add(v, 1).pow(1.5);
         return {
             wood: classroomFactor.mul(1e21),