Students and Courses Instructions

Setup

Fork this Repository
Clone YOUR fork
Compete the activity below
Push your solution to your fork
Submit a pull request from your repository to the turingschool-examples repository
- Make sure to put your name in your PR!

Iteration 1

Use TDD to create a Student class that responds to the following interaction pattern:

pry(main)> require './lib/student'
# => true

pry(main)> student = Student.new({name: "Morgan", age: 21})    
# => #<Student:0x00007fe196b0c050...>

pry(main)> student.name
# => "Morgan"

pry(main)> student.age
# => 21

pry(main)> student.scores
# => []

pry(main)> student.log_score(89)

pry(main)> student.log_score(78)    

pry(main)> student.scores
# => [89, 78]

pry(main)> student.grade # Average of all the scores
# => 83.5

Iteration 2

Use TDD to create a Course class that responds to the following interaction pattern:

pry(main)> require './lib/course'
# => true

pry(main)> require './lib/student'
# => true

pry(main)> course = Course.new("Calculus", 2)    
# => #<Course:0x00007fa0a69be328...>

pry(main)> course.name
# => "Calculus"

pry(main)> course.capacity
# => 2

pry(main)> course.students
# => []

pry(main)> course.full?
# => false

pry(main)> student1 = Student.new({name: "Morgan", age: 21})
# => #<Student:0x00007fa0a80ae588...>

pry(main)> student2 = Student.new({name: "Jordan", age: 29})    
# => #<Student:0x00007fa0a814f4d8...>

pry(main)> course.enroll(student1)    

pry(main)> course.enroll(student2)    

pry(main)> course.students
# => [#<Student:0x00007fa0a80ae588...>, #<Student:0x00007fa0a814f4d8...>]

pry(main)> course.full?
# => true

Iteration 3

You have been contracted by the University of Denver to write a program that models gradebooks for its courses. Use TDD to implement the following features:

Create a Gradebook class. Each gradebook has an instructor (dynamic), as well as a way to read that data.
Each gradebook has courses, as well as a way to read that data.
A gradebook can list all the students in its courses.
A gradebook can return a list of students whose grades are below a given threshold.

Method Name	Return Value (type)
`instructor`	`String`
`courses`	`Array` of `Course` objects
`add_course(course)`	`Array` of `Course` objects including the new one just added.
`list_all_students`	`Hash` where the `key` is a `Course` object and the `value` is an `Array` of `Student` objects (see example below)
`students_below(threshold)`	`Array` of `Student` objects

# list_all_students

{
  <Course> => [<Student>, <Student>],
  <Course> => [<Student>]
}

Iteration 4

The University of Denver would like you to implement additional Gradebook functionality:

They would like to be able to track all the grades across all courses.
They would also like to be able to find all students across all courses that have a grade in a given range.