valid if an object already exists in coreData swift - swift

Question

I have a record of students and grades, where it is saved:
Name
Spanish rating
science grade
math qualification
physical qualification
etc.
My question is how can I check if a student has already been registered, all this is done with CoreData.
I want to avoid duplicate records.
I want to use the name to check if a record with that same name already exists or not.
if it already exists, an alert is launched and if not, it is saved.
I have little time programming.
in this way the data is saved in CoreData.
data register.
private func saveStudent(){
do{
let currentStudent = Student(context: self.context)
currentStudent.name = self.name
currentStudent.spanish = self.spanish
currentStudent.science = self.science
currentStudent.math = self.math
currentStudent.physical = self.physical
currentStudent.average = self.average
try context.save()
SCLAlertView().showSuccess("Registrado", subTitle: "Estudiante registrado.", closeButtonTitle: "Aceptar", animationStyle: .bottomToTop)
}catch{
SCLAlertView().showError("Error", subTitle: "Error al guardar los datos.", closeButtonTitle: "Aceptar", animationStyle: .bottomToTop)
}
}
so the data from Core data is retrieved, an array is filled and the array fills a tableView.
Swift
class ViewController: UIViewController {
//MARK: - Private
private var arrayOfRatings = [Student]()
private let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
recuperarDatos()
}
private func recuperarDatos(){
do{
try self.arrayOfRatings = self.context.fetch(Student.fetchRequest())
DispatchQueue.main.async {
self.tableView.reloadData()
}
}catch{
SCLAlertView().showError("Error", subTitle: "Error al recuperar datos.", closeButtonTitle: "Aceptar", animationStyle: .bottomToTop)
}
}
retrieve data and reload tableView
my problem is that it should not be possible to register 2 students with the same name.
Before registering a new student I want to check if it has not been saved before.