80
True
Ohio
The text states that 17-year-old Robert Heft from Ohio designed the modern American flag with 50 stars, initially receiving a B-minus, with the condition that his grade would improve if his design was accepted as the official flag.
The claims about Robert Heft designing the modern American flag, receiving a B-minus, and his teacher offering to raise his grade if the design was accepted, are all consistent with the available historical evidence. Multiple sources corroborate these claims, providing a high degree of confidence in their validity.
Individual Claims
85
True
History
The modern American flag with 50 stars was designed by 17-year-old Robert Heft of Ohio.
Multiple sources confirm that Robert Heft, a 17-year-old from Ohio, designed the modern 50-star American flag in 1958 as a high school project. This design was adopted officially in 1960 after Hawaii became a state.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
95
Web Consensus Weight
50
Source Quality Score
85
Source Quality Weight
25
Llm Reasoning Score
90
Llm Reasoning Weight
25
Weighted Total
85
Evidence Summary
3 web sources corroborate this claim.
76
Mostly True
Education
Robert Heft's teacher gave his flag design a B-minus.
Evidence from multiple sources confirms that Robert Heft received a B-minus for his flag design project. This grade was later reconsidered.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
85
Web Consensus Weight
50
Source Quality Score
75
Source Quality Weight
25
Llm Reasoning Score
80
Llm Reasoning Weight
25
Weighted Total
76
Evidence Summary
2 web sources confirm Heft received a B-minus.
80
True
Education
The teacher would raise Robert Heft's grade if the flag was accepted as an official flag.
Several sources confirm that Heft's teacher promised to change his grade if the flag design became official, which eventually happened when the design was adopted by President Eisenhower.
Fact Check Score
None
Fact Check Weight
0
Web Consensus Score
90
Web Consensus Weight
50
Source Quality Score
80
Source Quality Weight
25
Llm Reasoning Score
85
Llm Reasoning Weight
25
Weighted Total
80
Evidence Summary
2 web sources confirm the grade change condition.
