Average number of students per section -- Clever API

clever.js

var _ = require('underscore');
var request = require('request');

var base = 'https://api.clever.com/'
var headers = { 'Authorization': 'Bearer DEMO_TOKEN' }

var students = 0;
var sections = 0;

var requestNext = function(json, fn) {
	var link = _.find(json.links, function(link) {
		return link.rel === "next";
	});
	if(link) {
		request({url: base + link.uri, headers: headers}, fn);
		return true;
	} else {
		return false;
	}
}

var addStudentsAndSections = function(json) {
	students += _.chain(json.data)
		.map(function(d){ return d.data.students.length; } )
		.reduce(function(a, b){ return a+b; })
		.value();
	sections += json.data.length;
}

var opts = {
	url: base + 'v1.1/sections',
	headers: headers
};

var callback = function (error, response, body) {
	if (!error && response.statusCode === 200) {
		var json = JSON.parse(body);
		addStudentsAndSections(json);
		if(!requestNext(json, callback)){
			console.log(students/sections)
		};
	} else {
		console.log('err');
	}
}

request(opts, callback);