How do I retrieve functions from a module script using a client-server foundation?

Hello,

What I'm trying to do is, using a LocalScript, access a module through invoking a RemoteFunction which will return the contents of a ModuleScript in ServerStorage. To do this, here's what I setup...

Server (Script) [ServerScriptService]

local getClasses = Instance.new("RemoteFunction", game:GetService("ReplicatedStorage")
getClasses.Name = "getClasses"

getClasses.OnServerInvoke = function(p)
    local module = require(game.ReplicatedStorage:WaitForChild("Classes"))
    print(module) -- debugging
    return module
end

Classes (ModuleScript) [ServerStorage]

local test = {
    ["Hello"] = function()
        print("hello world")
    end
}

return test

LocalScript [StarterPlayer > StarterPlayerScripts]

local rf = game.ReplicatedStorage:WaitForChild("getClasses")
local class1 = rf:InvokeServer()

print(class1, class1.Hello)

When you run the game using these, it will output table: 0x55bf868d9edefc4b nil , while the expected output for me would be something like table: 0x00 function: 0x00. However, I don't understand why. I'm guessing it's something to do with networking.

The reason for me doing this is to have hidden pieces of code I want to hide from possible exploiters who constantly work towards leaking proprietary content. And since ROBLOX has disabled the feature to use the require() on a off-sale model, I sincerely don't know what to do.

If anyone knows a fix for this, or possibly a better method, please let me know.

Thanks, - R455